Materials Literature
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The synthesis and characterization of two new N,N'-diarylverdazyl radical ligands and their corresponding PdCl2 complexes are described. One of the two radicals is of the "Kuhn verdazyl" structure type and was made by adaptation of standard synthetic procedures for this class of verdazyl. The N,N'-diphenyl-6-oxoverdaz…
ZnO colloidal nanoparticles were synthesized, the average size of these nanoparticles is around 25 nm with hexagonal form. It was noted that stabilization depends directly on the purifying process; in this work we do not change the nature of the solution as a difference from Meulekamp′s method, and we do not use any a…
Pre-combustion CO2 Capture applied to industrial sources is an alternative for achieving low CO2 emissions at a moderate cost. The potential of the technology to be used as retrofit would further expand its possibilities and could be a real benefit to the industry in terms of achieving CO2 emission reduction at relati…
In this paper, we report the use of electrospinning methods for the preparation of polymeric nanofibers containing Lanthanide–Organic Frameworks (LnMOFs) and present a detailed investigation of their spectroscopic properties. The nanocomposites were based in polyvinyl alcohol (PVA) and two isotypical 2D LnMOFs ([Ln(DP…
Two Dy(III) ions can be water bridged to form a textbook example of ferromagnetic short-bridged Dy-dimers where strong Ising anisotropy can be evidenced by single-crystal rotating magnetometry. The dimers present both single ion and single molecule magnet behaviour. Magnetic dilution evidences the influence of the fer…
An in situ X-ray absorption fine structure (XAFS) experiment has been performed to observe the evolution of gold nanoparticles in the ionic liquid [BMIM][AuCl4], by hard X-ray irradiation. The ionic liquid acts as both a reducing agent and a protective ligand. A synchrotron-based X-ray plays the role of the irradiatio…
The dihydride pincer complex [IrH2(POCOP)] reacts with surface silanols of mesoporous silica (SBA-15) to give the coordinatively unsaturated, yet stable hydridesiloxo Ir(III) species [IrH(O-SBA-15)(POCOP)]. The silica-grafted complex catalyses the hydrogenation of ethene and propene at low temperature and pressure wit…
Iron- and nickel-substituted decaniobates, [H2Fe(III)Nb9O28](6-) and [H3Ni(II)Nb9O(28)](6-) were hydrothermally synthesized as tetramethylammonium salts and the structures were determined by X-ray crystallography. The highly soluble title compounds were characterized by ESI-MS, FT-IR and UV-Vis titration.
The single phase Pb(0.8)Co(0.2)TiO3 thin films were synthesized on a Pt/Ti/SiO2/Si substrate by the sol-gel route. The present films exhibited homogeneous microstructure with low porosity. O 1s X-ray photoelectron spectroscopy (XPS) was used to detect the amount of oxygen vacancies. The ferroelectric measurements show…
Sm 3+ /Yb 3+ co-doped tellurite glasses are prepared by melt-quenching technique. The density of the glasses varies between 4.65 and 4.84 g/cm 3 . The optical absorption spectra consist of eight bands in the wavelength range of 350-2 000 nm, which correspond to the transitions from ground level 6 H 5/2 to the various…
A new AB2 monomer 4-hydroxyl-4′,4′′-difluorotriphenylmethane was successfully synthesized via a Friedel–Crafts alkylation of phenol from 4,4′-difluorodiphenylmethanol. Based on the AB2 monomer, novel fluoro-terminated hyperbranched poly(phenylene oxide)s (FHPPOs) were synthesized via the SNAr reaction by self-condensa…
We show that the study of gold nanoparticle self-assemblies induced by a liquid crystal matrix reveals the intimate distorted structure of the liquid crystal existing prior to nanoparticles' incorporation. We also show how this intimate structure controls the spacing between nanoparticles in the self-assemblies. We ha…
Au144-xPdx(SR)60 alloy nanomolecules were synthesized and characterized by ESI mass spectrometry to atomic precision. The number of Pd atoms can be varied by changing the incoming metal ratio and plateaus at 7 Pd atoms. Based on the proposed 3-shell structure of Au144(SR)60, we hypothesize that the Pd atoms are select…
Three novel complexes, [Er(dmh)3(bipy)], [Er(dmh)3bath] and [Er(dmh)3(5NO2phen)], with 2,6-dimethyl-3,5-heptanedione (Hdmh) as the main sensitizer and either 2,2′-bipyridine (bipy), bathophenanthroline (bath) or 5-nitro-1,10-phenanthroline (5NO2phen) as synergistic ligands were synthesized. Upon excitation at the maxi…
We have investigated the response of dextran brushes in aqueous dimethyl sulfoxide (DMSO) mixtures under normal compression using the extended surface forces apparatus. The hydrophilic, tethered polymer chains extend significantly in the studied aqueous mixtures and two brush-covered surfaces exhibit repulsive forces…
It is very challenging to assemble microscale objects on a macroscale substrate due to the weak interaction and size/geometric mismatch. Herein a novel polyelectrolyte-mediated self-assembly approach with microsized ZnO nanoflowers as building blocks was successfully used to grow a hierarchical nanostructure on a subs…
A well-defined amphiphilic poly(triethyleneglycol methylether methacrylate)-block-polystyrene (PTEGMA-b-PS) block copolymer with terpyridine groups randomly distributed within the water-soluble block has been sequentially synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. Its self-a…
Generation 5-poly(amidoamine) dendrimers pre-modified with folic acid and methotrexate (G5-FA-MTX) were used as templates for the synthesis of dendrimer-entrapped gold nanoparticles (Au DENPs). The synthesized [(Au0)50-G5-FA-MTX] DENPs were able to target and specifically inhibit the growth of cancer cells overexpress…
Engineering nanostructures from the bottom up enables the creation of carefully sculpted complex structures that are not accessible via top down fabrication techniques, in particular, complex periodic structures for applications in photonics and sensing. In this work a proof of principle that bottom up approach can be…
Structural properties of silicon nanorods generated from low-index plane surfaces (100), (110), and (111) with different cross-sections have been investigated by performing classical molecular dynamics simulations. An atomistic potential function consisting of a combination of two- and three-body interactions has been…